What is ... a Borel reduction?
What is ... a Borel reduction?
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什么是...... Borel 减少?
DOI:
10.1090/noti1747
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发表时间:
2018
影响因子:
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通讯作者:
Foreman, Matthew
中科院分区:
文献类型:
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作者:
Foreman, Matthew
Borel reductions provide a method of proving that certain problems are impossible using countably infinitary techniques based on countable information and provide a hierarchy of difficulty for classification problems. This is illustrated with examples, including a recent result that a classification problem in dynamical systems proposed by von Neumann in 1932 is impossible to solve with inherently countable tools.
DOI:
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发表时间:
2011
期刊:
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作者:
M. Foreman;D. Rudolph;B. Weiss
通讯作者:
B. Weiss